CPC B64C13/42
Jump to navigation
Jump to search
. . . with power amplification, fluid pressure, and having duplication or stand-by provisions . . .
| Enclosing categories | CPC B64C13/24 |
|---|---|
| Subcategories | |
| Keywords | |
| Start year | |
| End year |
Patents in category CPC B64C13/42
- Patent US-1920-1327183 (English title: Control for dual-control aeroplanes, Inventors: Frederic Langtry Van Allen, Filing date: 1918-08-30)
